Wake up and sleep on iMX233-maxi

[PipBoy2000]

is there any way to put the board to sleep (low power consumtion) and resume (not boot from the begining) in ~1 sec from some gpio interrupt or using RES/PWR_BTN?

I tried to push PWR_BTN and the board go to low power mode but when I short the RES jumper it just reboot.
it is the same when i use lipo or 6-16V power source.

I am using pre build debian rootfs.